
Shares of human resources software provider Workday WDAY.O rise nearly 9% to $237 in early trading
Activist investor Elliott Management builds more than $2 billion stake in WDAY and voices support for company's leadership
Company on Tuesday announced it would buy AI firm Sana for about $1.1 bln
This is WDAY's third AI-related deal in less than two months, following the acquisition of Paradox and Flowise in August
Workday shares down 15% YTD